WO1999037355A1 - Catheter for corporeal duct - Google Patents

Catheter for corporeal duct Download PDF

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Publication number
WO1999037355A1
WO1999037355A1 PCT/FR1999/000117 FR9900117W WO9937355A1 WO 1999037355 A1 WO1999037355 A1 WO 1999037355A1 FR 9900117 W FR9900117 W FR 9900117W WO 9937355 A1 WO9937355 A1 WO 9937355A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheath
catheter
flexible
catheter according
thin
Prior art date
Application number
PCT/FR1999/000117
Other languages
French (fr)
Inventor
Georges Boussignac
Original Assignee
Georges Boussignac
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Georges Boussignac filed Critical Georges Boussignac
Priority to AU20612/99A priority Critical patent/AU2061299A/en
Priority to EP99900974A priority patent/EP0971766A1/en
Priority to US09/380,822 priority patent/US6458097B1/en
Priority to JP53797999A priority patent/JP2001516269A/en
Priority to CA002281625A priority patent/CA2281625A1/en
Publication of WO1999037355A1 publication Critical patent/WO1999037355A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M2025/006—Catheters; Hollow probes characterised by structural features having a special surface topography or special surface properties, e.g. roughened or knurled surface
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter

Definitions

  • the present invention relates to a catheter intended to be introduced into a body channel and comprising an elongated flexible body, rigid in traction, which comprises a sealed tubular sheath for the transmission of a fluid under pressure.
  • dilation catheters which include an inflatable balloon, which is disposed at the distal end of said catheters and which can be supplied with inflation fluid, from the proximal end thereof, by a sealed tubular sheath for fluid transmission incorporated into said catheters.
  • the balloon is inflated by supplying it with inflation fluid through said sheath and the walls of the stenosis are separated from one another. 'other by said balloon, to restore a satisfactory passage section of said body channel.
  • said sealed sheath for transmitting pressurized fluid at least on the distal side of the catheter, is disposed at the periphery of the latter and forms the outer surface thereof. Furthermore, to avoid any risk of interruption of gas communication through said sheath by radial collapse thereof, said sheath is produced in the form of a flexible tube, radially rigid. Consequently, it is impossible to give said sheath an outer diameter as small as it would be desirable to pass through small bodily channels or through stenoses blocking almost all of such a bodily channel.
  • the object of the present invention is to remedy these drawbacks.
  • the catheter of the type recalled above is remarkable in that said sealed tubular sheath for the transmission of a pressurized fluid is made at least in part, in particular on the distal side, of a material flexible and has a thin wall with an irregular surface, so that, when said sheath undergoes radial collapse, the surface irregularities thereof allow fluid communication to remain between the ends of said sheath.
  • a flexible sheath which, in the stretched or inflated state (when it is crossed by the pressurized fluid) can have a very small diameter and which, in the relaxed or deflated state (when it does not is not crossed by the pressurized fluid) has an even smaller diameter, while however providing fluid communication over its length.
  • said flexible sheath itself envelops one or more elongated elements of the catheter, for example tubular, it will easily be understood that its radial size is hardly greater than that of said elements, even in the inflated state.
  • tubular guide for catheter placement is greatly reduced, which facilitates the progression of said catheter in said body canal.
  • the flexible material of which said sheath is made according to the present invention may be synthetic and be, for example, a polyethylene, a polyamide or a polyether terephthalate.
  • the thickness of the wall of said sheath can be from a few microns to a few tens of microns.
  • the thin sheath with an irregular surface can be obtained by shaping, under heat and under pressure, a flexible tube with a thin wall, for example produced by extruding said materials, on a mandrel whose surface carries irregularities.
  • a mandrel can be constituted by a helical spring or the like imprinting in the wall of said tube a hollow helical rib. It will be noted that such a helical rib, in addition to its anti-collapse action mentioned above, makes it possible to increase the radial resistance to crushing of said flexible sheath.
  • Figure 1 is a schematic axial section of a distal portion of a catheter having a sheath according to the present invention, said sheath being in the inflated state.
  • Figure 2 is a view similar to Figure 1, the sheath being in the deflated state.
  • FIGS. 3 and 4 are axially schematic sections of a distal part of a variant catheter comprising a concealed sheath form in the present invention, respectively in the inflated state and in the deflated state.
  • the distal part 1 of the flexible catheter shown diagrammatically in FIGS. 1 and 2 comprises one or more internal elongated elements 2, surrounded by a flexible and tight sheath 3. At least some of the elements 2 are rigid in traction.
  • the flexible and waterproof sheath 3 is made of a film of polyethylene, polyamide or polyether terephthalate, with a wall thickness of between a few microns and a few tens of microns.
  • a helical rib with contiguous turns 5.
  • the convexity of each turn 5 is for example directed towards the outside of the catheter, while the concavity of said turns is then opposite said internal elements 2.
  • the sheath 3 according to the present invention is enclosed in an external tube 9. Even in the inflated state (FIG. 3), the flexible sheath 3 occupies a small radial space requirement, so that the diameter d of said catheter 8 can be reduced. In the deflated state (FIG. 4), the radial size of said flexible sheath 3 is even more reduced, but provides for a helical passage 10 over its entire length, because of the existence of the rib 5.
  • the present invention has been introduced above while presenting the drawbacks of dilatation catheters, the present invention is not limited to this particular type of catheter and it can be implemented as soon as a flexible catheter and rigid in traction, comprises a sealed tubular sheath for the transmission of a pressurized fluid.
  • the sheath 3 has been shown as shaped on the outer surface of a helical spring, it goes without saying that said sheath could have been shaped on the inner surface of such a spring .

Abstract

The invention concerns a catheter (1) designed to be inserted in a corporeal duct and comprising a flexible elongated body, rigid in traction, including a sealed tubular sheath (3) for transmitting a fluid under pressure and capable of being subjected to radial collapse. Said catheter is characterised in that said sheath (3) is made at least partially of a flexible material and has a thin wall (4) with uneven surface, such that, when said sheath (3) is subjected to such a radial collapse, the irregularities at the surface thereof maintain a fluid communication (7) between said sheath (3) ends.

Description

Cathéter pour canal corporel.Catheter for body canal.
La présente invention concerne un cathéter destiné à être introduit dans un canal corporel et comportant un corps allongé flexible, rigide en traction, qui comprend une gaine tubulaire étanche pour la transmission d'un fluide sous pression. Par exemple pour le traitement de sténoses des artères coronaires, de l'oesophage, de l'urètre, etc ..., on connaît déjà des cathéters de dilatation comportant un ballonnet gonflable, qui est disposé à l'extrémité distale desdits cathéters et qui peut être alimenté en fluide de gonflage, depuis l'extrémité proximale de ceux-ci, par une gaine tubulaire étanche de transmission de fluide incorporée auxdits cathéters. Ainsi, lorsque le cathéter a été introduit dans le canal corporel jusqu'au niveau d'une sténose, le ballonnet est gonflé en l'alimentant en fluide de gonflage à travers ladite gaine et les parois de la sténose sont écartées l'une de l'autre par ledit ballonnet, pour rétablir une section de passage satisfaisante dudit canal corporel.The present invention relates to a catheter intended to be introduced into a body channel and comprising an elongated flexible body, rigid in traction, which comprises a sealed tubular sheath for the transmission of a fluid under pressure. For example, for the treatment of stenoses of the coronary arteries, the esophagus, the urethra, etc., dilation catheters are already known which include an inflatable balloon, which is disposed at the distal end of said catheters and which can be supplied with inflation fluid, from the proximal end thereof, by a sealed tubular sheath for fluid transmission incorporated into said catheters. Thus, when the catheter has been introduced into the body canal to the level of a stenosis, the balloon is inflated by supplying it with inflation fluid through said sheath and the walls of the stenosis are separated from one another. 'other by said balloon, to restore a satisfactory passage section of said body channel.
Fréquemment, ladite gaine étanche de transmission de fluide sous pression, au moins du côté distal du cathéter, est disposée en périphérie de ce dernier et en forme la surface extérieure. Par ailleurs, pour éviter tout risque d'interruption de communication gazeuse à travers ladite gaine par collapsus radial de celle-ci, ladite gaine est réalisée sous la forme d'un tube flexible, radialement rigide. Par suite, il est impossible de donner à ladite gaine un diamètre extérieur aussi petit qu'il serait souhaitable pour passer dans de petits canaux corporels ou à travers des sténoses bouchant la presque totalité d'un tel canal corporel. Il en résulte donc, soit l'impossibilité complète d'utiliser de tels cathéters de dilatation de sorte qu'alors il n'y a pas d'autre solution que de mettre en oeuvre une inter- vention chirurgicale lourde pour éliminer la sténose, soit des frottements importants contre les parois desdits canaux corporels (ou contre les parois d'un éventuel guide tubulaire de mise en place du cathéter) rendant difficile la progression desdits cathéters à l'intérieur du corps. Lorsque ladite gaine étanche de transmission de fluide, radiale- ment rigide, est incorporée à l'intérieur dudit cathéter, il en résulte les mêmes inconvénients, puisque son diamètre obligatoirement important impose un diamètre également important pour ledit cathéter.Frequently, said sealed sheath for transmitting pressurized fluid, at least on the distal side of the catheter, is disposed at the periphery of the latter and forms the outer surface thereof. Furthermore, to avoid any risk of interruption of gas communication through said sheath by radial collapse thereof, said sheath is produced in the form of a flexible tube, radially rigid. Consequently, it is impossible to give said sheath an outer diameter as small as it would be desirable to pass through small bodily channels or through stenoses blocking almost all of such a bodily channel. This therefore results in either the complete impossibility of using such dilation catheters so that there is then no other solution than to implement an inter- heavy surgical intervention to eliminate the stenosis, that is to say significant friction against the walls of said body channels (or against the walls of a possible tubular guide for placing the catheter) making it difficult for said catheters to progress inside the body. When said radially rigid sealed fluid transmission sheath is incorporated inside said catheter, the same drawbacks result, since its necessarily large diameter imposes an equally large diameter for said catheter.
La présente invention a pour objet de remédier à ces inconvé- nients.The object of the present invention is to remedy these drawbacks.
A cette fin, selon l'invention, le cathéter du type rappelé ci-dessus est remarquable en ce que ladite gaine tubulaire étanche pour la transmission d'un fluide sous pression est réalisée au moins en partie, notamment du côté distal, en une matière souple et présente une paroi mince à surface irrégulière, de façon que, lorsque ladite gaine subit un collapsus radial, les irrégularités de surface de celle-ci laissent subsister une communication fluide entre les extrémités de ladite gaine.To this end, according to the invention, the catheter of the type recalled above is remarkable in that said sealed tubular sheath for the transmission of a pressurized fluid is made at least in part, in particular on the distal side, of a material flexible and has a thin wall with an irregular surface, so that, when said sheath undergoes radial collapse, the surface irregularities thereof allow fluid communication to remain between the ends of said sheath.
Ainsi, on obtient une gaine souple qui, à l'état tendu ou gonflé (lorsqu'elle est traversée par le fluide sous pression) peut présenter un très faible diamètre et qui, à l'état détendu ou dégonflé (lorsqu'elle n'est pas traversée par le fluide sous pression) a un diamètre encore plus faible, tout en ménageant toutefois une communication fluide sur sa longueur. Lorsque ladite gaine souple enveloppe elle-même un ou plusieurs éléments allongés du cathéter, par exemple tubulaires, on comprendra aisément que son encombrement radial n'est guère supérieur à celui desdits éléments, même à l'état gonflé.Thus, a flexible sheath is obtained which, in the stretched or inflated state (when it is crossed by the pressurized fluid) can have a very small diameter and which, in the relaxed or deflated state (when it does not is not crossed by the pressurized fluid) has an even smaller diameter, while however providing fluid communication over its length. When said flexible sheath itself envelops one or more elongated elements of the catheter, for example tubular, it will easily be understood that its radial size is hardly greater than that of said elements, even in the inflated state.
Par ailleurs, on notera que du fait des aspérités de la surface de ladite gaine, la surface de contact entre celle-ci et le canal corporel (ou le 3Furthermore, it will be noted that due to the roughness of the surface of said sheath, the contact surface between the latter and the body channel (or the 3
guide tubulaire de mise en place du cathéter) est fortement diminuée, ce qui facilite la progression dudit cathéter dans ledit canal corporel.tubular guide for catheter placement) is greatly reduced, which facilitates the progression of said catheter in said body canal.
La matière souple dont est constituée ladite gaine conforme à la présente invention peut être synthétique et être par exemple un poly- éthylène, un polyamide ou un polyéthertéréphtalate. L'épaisseur de la paroi de ladite gaine peut être de quelques microns à quelques dizaines de microns.The flexible material of which said sheath is made according to the present invention may be synthetic and be, for example, a polyethylene, a polyamide or a polyether terephthalate. The thickness of the wall of said sheath can be from a few microns to a few tens of microns.
La gaine mince à surface irrégulière peut être obtenue par conformation, à chaud et sous pression, d'un tube souple à paroi mince, par exemple réalisé par extrusion desdites matières, sur un mandrin dont la surface porte des irrégularités. Un tel mandrin peut être constitué par un ressort hélicoïdal ou analogue imprimant dans la paroi dudit tube une nervure hélicoïdale creuse. On remarquera qu'une telle nervure hélicoïdale, en plus de son action anti-collapsus mentionnée ci-dessus, permet d'ac- croître la résistance radiale à l'écrasement de ladite gaine souple.The thin sheath with an irregular surface can be obtained by shaping, under heat and under pressure, a flexible tube with a thin wall, for example produced by extruding said materials, on a mandrel whose surface carries irregularities. Such a mandrel can be constituted by a helical spring or the like imprinting in the wall of said tube a hollow helical rib. It will be noted that such a helical rib, in addition to its anti-collapse action mentioned above, makes it possible to increase the radial resistance to crushing of said flexible sheath.
On notera que le document US-A-5 466 222 décrit un cathéter pourvu de soufflets, respectivement intérieur et extérieur, destinés à être comprimés longitudinalement.Note that document US-A-5,466,222 describes a catheter provided with bellows, respectively interior and exterior, intended to be compressed longitudinally.
Les figures du dessin annexé feront bien comprendre comment l'invention peut être réalisée. Sur ces figures, des références identiques désignent des éléments semblables.The figures of the appended drawing will make it clear how the invention can be implemented. In these figures, identical references designate similar elements.
La figure 1 est une coupe axiale schématique d'une partie distale d'un cathéter comportant une gaine conforme à la présente invention, ladite gaine étant à l'état gonflé. La figure 2 est une vue semblable à la figure 1 , la gaine se trouvant à l'état dégonflé.Figure 1 is a schematic axial section of a distal portion of a catheter having a sheath according to the present invention, said sheath being in the inflated state. Figure 2 is a view similar to Figure 1, the sheath being in the deflated state.
Les figures 3 et 4 sont des coupes axialement schématiques d'une partie distale d'une variante de cathéter comportant une gaine con- forme à la présente invention, respectivement à l'état gonflé et à l'état dégonflé.FIGS. 3 and 4 are axially schematic sections of a distal part of a variant catheter comprising a concealed sheath form in the present invention, respectively in the inflated state and in the deflated state.
La partie distale 1 du cathéter flexible représentée schématique- ment sur les figures 1 et 2 comportent un ou plusieurs éléments allongés internes 2, entourés par une gaine souple et étanche 3. Au moins certains des éléments 2 sont rigides en traction.The distal part 1 of the flexible catheter shown diagrammatically in FIGS. 1 and 2 comprises one or more internal elongated elements 2, surrounded by a flexible and tight sheath 3. At least some of the elements 2 are rigid in traction.
La gaine souple et étanche 3 est réalisée en un film de polyéthy- lène, de polyamide ou de polyéthertéréphtalate, avec une épaisseur de paroi comprise entre quelques microns et quelques dizaines de microns. Dans la paroi mince 4 de la gaine 3 est imprimée une nervure hélicoïdale à spires jointives 5. La convexité de chaque spire 5 est par exemple dirigée vers l'extérieur du cathéter, tandis que la concavité desdites spires se trouve alors en regard desdits éléments internes 2.The flexible and waterproof sheath 3 is made of a film of polyethylene, polyamide or polyether terephthalate, with a wall thickness of between a few microns and a few tens of microns. In the thin wall 4 of the sheath 3 is printed a helical rib with contiguous turns 5. The convexity of each turn 5 is for example directed towards the outside of the catheter, while the concavity of said turns is then opposite said internal elements 2.
Ainsi, lorsqu'un fluide sous pression est introduit (flèches F sur la figure 1 ) entre lesdits éléments internes 2 et ladite gaine souple 3, celle-ci est tendue et il apparaît un espace annulaire 6 entre lesdits éléments internes 2 et ladite gaine souple 3. En revanche, lorsqu'aucun fluide sous pression n'est introduit entre lesdits éléments internes 2 et ladite gaine souple 3, celle-ci est détendue et s'applique au moins en partie sur lesdits éléments internes 2, en ménageant toutefois un espace hélicoïdal 7 avec ceux-ci, sur toute sa longueur, du fait de l'existence de la nervure hélicoïdale 4.Thus, when a pressurized fluid is introduced (arrows F in FIG. 1) between said internal elements 2 and said flexible sheath 3, the latter is stretched and an annular space 6 appears between said internal elements 2 and said flexible sheath 3. On the other hand, when no pressurized fluid is introduced between said internal elements 2 and said flexible sheath 3, the latter is relaxed and is applied at least in part to said internal elements 2, while however providing space helical 7 with them, over its entire length, due to the existence of the helical rib 4.
Dans le cathéter 8 des figures 3 et 4, la gaine 3 conforme à la présente invention est enfermée dans un tube extérieur 9. Même à l'état gonflé (figure 3), la gaine souple 3 occupe un faible encombrement radial, de sorte que le diamètre d dudit cathéter 8 peut être réduit. A l'état dégonflé (figure 4), l'encombrement radial de ladite gaine souple 3 est encore plus réduit, mais ménage un passage hélicoïdal 10 sur toute sa longueur, à cause de l'existence de la nervure 5. Bien entendu, quoique ci-dessus on ait introduit la présente invention en présentant les inconvénients des cathéters à dilatation, la présente invention n'est pas limitée à ce type particulier de cathéter et elle peut être mise en oeuvre dès qu'un cathéter, flexible et rigide en traction, comporte une gaine tubulaire étanche pour la transmission d'un fluide sous pression. Par ailleurs, bien que sur les figures 1 à 4, on ait représenté la gaine 3 comme conformée sur la surface extérieure d'un ressort hélicoïdal, il va de soi que ladite gaine aurait pu être conformée sur la surface intérieure d'un tel ressort. In the catheter 8 of FIGS. 3 and 4, the sheath 3 according to the present invention is enclosed in an external tube 9. Even in the inflated state (FIG. 3), the flexible sheath 3 occupies a small radial space requirement, so that the diameter d of said catheter 8 can be reduced. In the deflated state (FIG. 4), the radial size of said flexible sheath 3 is even more reduced, but provides for a helical passage 10 over its entire length, because of the existence of the rib 5. Of course, although the present invention has been introduced above while presenting the drawbacks of dilatation catheters, the present invention is not limited to this particular type of catheter and it can be implemented as soon as a flexible catheter and rigid in traction, comprises a sealed tubular sheath for the transmission of a pressurized fluid. Furthermore, although in FIGS. 1 to 4, the sheath 3 has been shown as shaped on the outer surface of a helical spring, it goes without saying that said sheath could have been shaped on the inner surface of such a spring .

Claims

REVENDICATIONS
1 . Cathéter (1 , 8) destiné à être introduit dans un canal corporel et comportant un corps allongé flexible, rigide en traction, qui comprend une gaine tubulaire étanche (3) pour la transmission d'un fluide sous pression et qui est susceptible de subir un collapsus radial, caractérisé en ce que ladite gaine (3) est réalisée au moins en partie en une matière souple et présente une paroi mince (4) à surface irrégulière, telle que, lorsque ladite gaine (3) subit un tel collapsus radial, les irrégularités de surface (5) de celle-ci laissent subsister une communication fluide (7, 10) entre les extrémités de ladite gaine (3).1. Catheter (1, 8) intended to be introduced into a body channel and comprising an elongated flexible body, rigid in traction, which comprises a tight tubular sheath (3) for the transmission of a fluid under pressure and which is liable to undergo a radial collapse, characterized in that said sheath (3) is made at least in part from a flexible material and has a thin wall (4) with an irregular surface, such that, when said sheath (3) undergoes such a radial collapse, the surface irregularities (5) thereof leave a fluid communication (7, 10) between the ends of said sheath (3).
2. Cathéter selon la revendication 1 , caractérisé en ce que la matière souple dont est constituée ladite gaine (3) est une matière synthétique telle qu'un polyéthylène, un polyamide ou un polyéthertéréphtalate. 2. Catheter according to claim 1, characterized in that the flexible material of which said sheath (3) is made is a synthetic material such as a polyethylene, a polyamide or a polyether terephthalate.
3. Cathéter selon l'une des revendications 1 ou 2, caractérisé en ce que l'épaisseur de la paroi mince (4) de ladite gaine est de quelques microns à quelques dizaines de microns.3. Catheter according to one of claims 1 or 2, characterized in that the thickness of the thin wall (4) of said sheath is from a few microns to a few tens of microns.
4. Cathéter selon l'une des revendications 1 à 3, caractérisé en ce que ladite gaine mince à surface irrégulière (3) est obte- nue par conformation, à chaud et sous pression, d'un tube souple à paroi mince sur un mandrin dont la surface externe porte des irrégularités.4. Catheter according to one of claims 1 to 3, characterized in that said thin sheath with an irregular surface (3) is obtained by conformation, hot and under pressure, of a flexible tube with a thin wall on a mandrel whose external surface bears irregularities.
5. Cathéter selon l'une des revendications 1 à 4, caractérisé en ce que, dans la paroi (4) de ladite gaine mince (3), est imprimée une nervure hélicoïdale (5). 5. Catheter according to one of claims 1 to 4, characterized in that, in the wall (4) of said thin sheath (3), is printed a helical rib (5).
6. Cathéter selon l'une des revendications 1 à 5, caractérisé en ce que ladite gaine souple (3) forme, au moins en partie, la surface extérieure dudit cathéter (1 ). 6. Catheter according to one of claims 1 to 5, characterized in that said flexible sheath (3) forms, at least in part, the outer surface of said catheter (1).
7. Cathéter selon l'une des revendications 1 à 5, caractérisé en ce que ladite gaine souple (3) est enfermée à l'intérieur dudit cathéter (8) . 7. Catheter according to one of claims 1 to 5, characterized in that said flexible sheath (3) is enclosed inside said catheter (8).
PCT/FR1999/000117 1998-01-22 1999-01-21 Catheter for corporeal duct WO1999037355A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU20612/99A AU2061299A (en) 1998-01-22 1999-01-21 Catheter for corporeal duct
EP99900974A EP0971766A1 (en) 1998-01-22 1999-01-21 Catheter for corporeal duct
US09/380,822 US6458097B1 (en) 1998-01-22 1999-01-21 Catheter for corporeal duct
JP53797999A JP2001516269A (en) 1998-01-22 1999-01-21 Biological catheter
CA002281625A CA2281625A1 (en) 1998-01-22 1999-01-21 Catheter for corporeal duct

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9800652A FR2773717B1 (en) 1998-01-22 1998-01-22 CATHETER FOR BODY CHANNEL
FR98/00652 1998-01-22

Publications (1)

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WO1999037355A1 true WO1999037355A1 (en) 1999-07-29

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PCT/FR1999/000117 WO1999037355A1 (en) 1998-01-22 1999-01-21 Catheter for corporeal duct

Country Status (7)

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US (1) US6458097B1 (en)
EP (1) EP0971766A1 (en)
JP (1) JP2001516269A (en)
AU (1) AU2061299A (en)
CA (1) CA2281625A1 (en)
FR (1) FR2773717B1 (en)
WO (1) WO1999037355A1 (en)

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NL1018881C2 (en) * 2001-05-08 2002-11-25 Blue Medical Devices B V Balloon catheter for dilating vessels and lumina comprise inflatable balloon with ends attached to it's catheter tube
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US7766899B2 (en) * 2003-09-17 2010-08-03 Prostalund Operations Ab Partial-length, indwelling prostatic catheter using coiled inflation tube as an anchor and methods of draining urine and flushing clots
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US5415634A (en) * 1990-08-23 1995-05-16 Devices For Vascular Intervention, Inc. Catheter having helical inflation lumen
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Also Published As

Publication number Publication date
EP0971766A1 (en) 2000-01-19
FR2773717B1 (en) 2000-06-16
CA2281625A1 (en) 1999-07-29
JP2001516269A (en) 2001-09-25
AU2061299A (en) 1999-08-09
US6458097B1 (en) 2002-10-01
US20020111582A1 (en) 2002-08-15
FR2773717A1 (en) 1999-07-23

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